andym00 Posted May 23, 2012 Share Posted May 23, 2012 Silly question time, but are there any plans for a simple way to swap the 65816 out for a real 6502 ? Either through an adapter or something, or even a full-blown 6502 emulation on the FPGA ? Just wondering because current software that uses *any* illegal opcodes is going to fall flat on it's face running on a 65816 out of the box.. Or is that not a concern for this ? Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted May 23, 2012 Share Posted May 23, 2012 Very few programs fail on a 65816... It would be much more effective if you just swapped the whole computer rather than try to kludge something with a 6502. Lots of software failed on an 800 vs. 800XL/1200XL. Some even failed on a 1050 vs. 810 or XF551. We live with it. Also, if you want to go fast, you have to minimize the number of circuits in the nets. Bob 1 Quote Link to comment Share on other sites More sharing options...
HiroProX Posted May 24, 2012 Share Posted May 24, 2012 I like. Quote Link to comment Share on other sites More sharing options...
mimo Posted May 24, 2012 Share Posted May 24, 2012 can I fit it in my uber 600xl?!! Quote Link to comment Share on other sites More sharing options...
walter_J64bit Posted May 24, 2012 Share Posted May 24, 2012 What can be done with this CPU upgrade? Quote Link to comment Share on other sites More sharing options...
sloopy Posted May 24, 2012 Share Posted May 24, 2012 What can be done with this CPU upgrade? go fast! ;') the possibilities are quite vast... the big issue is whether software to take advanatge of it will be written... Sort of like VBXE, it has alot of capabilities, but not alot has been written for it. So its main use is RGB video for most people... sloopy. Quote Link to comment Share on other sites More sharing options...
andym00 Posted May 24, 2012 Share Posted May 24, 2012 Very few programs fail on a 65816... It would be much more effective if you just swapped the whole computer rather than try to kludge something with a 6502. Lots of software failed on an 800 vs. 800XL/1200XL. Some even failed on a 1050 vs. 810 or XF551. We live with it. Also, if you want to go fast, you have to minimize the number of circuits in the nets. Bob Hmmm, I don't care about the drive issues, but I don't want 3 A8s each with a unique CPU.. One 6502, one 6809, one 65816.. That's too much for me.. I guess I'll be skipping this then.. Quote Link to comment Share on other sites More sharing options...
candle Posted May 24, 2012 Author Share Posted May 24, 2012 what 6809 has to do with anything? you can't run any a8 software on 6809, on 65816 you can, almost everything Quote Link to comment Share on other sites More sharing options...
+bf2k+ Posted May 25, 2012 Share Posted May 25, 2012 I'll get one of these! Quote Link to comment Share on other sites More sharing options...
sloopy Posted May 25, 2012 Share Posted May 25, 2012 what 6809 has to do with anything? you can't run any a8 software on 6809, on 65816 you can, almost everything there is ONE demo for a 6809 based A8, and a decent OS... but not much else :'( sloopy. Quote Link to comment Share on other sites More sharing options...
Shawn Jefferson Posted May 25, 2012 Share Posted May 25, 2012 (edited) Also, there is already an OS by KMK for the 65816 right? And some support in SpartaDOS X? I want one! Edited May 25, 2012 by Shawn Jefferson Quote Link to comment Share on other sites More sharing options...
andym00 Posted May 25, 2012 Share Posted May 25, 2012 what 6809 has to do with anything? you can't run any a8 software on 6809, on 65816 you can, almost everything Nothing beyond the fact that I was looking to reduce my A8 fleet to a sensible count, not increase it even further Quote Link to comment Share on other sites More sharing options...
+David_P Posted May 27, 2012 Share Posted May 27, 2012 Silly question time, but are there any plans for a simple way to swap the 65816 out for a real 6502 ? Either through an adapter or something, or even a full-blown 6502 emulation on the FPGA ? FTe made an adapter to drop a 65816 into your XL; I've got one somewhere in my Atari cave. Never encountered any software problems. Their use of excessively soft gold for the pins, on the other hand, has resulted in periodic hardware problems... Quote Link to comment Share on other sites More sharing options...
+bob1200xl Posted May 27, 2012 Share Posted May 27, 2012 The FTe adaptor is also sensitive to ANTIC variations. If it gets flakey, try a different ANTIC. Bob Quote Link to comment Share on other sites More sharing options...
candle Posted May 28, 2012 Author Share Posted May 28, 2012 i wish i had more time at least that much: 5 Quote Link to comment Share on other sites More sharing options...
venom4728a Posted May 28, 2012 Share Posted May 28, 2012 I just relocated my VBXE with a ribbon cable like that, no worries about board components now with it back closer to the back of the machine. C816 looks great!!! Robert Quote Link to comment Share on other sites More sharing options...
doomguy Posted May 28, 2012 Share Posted May 28, 2012 Looking fantastic. What's the connector ( or switch ) that the board is connected to for? Quote Link to comment Share on other sites More sharing options...
flashjazzcat Posted May 28, 2012 Share Posted May 28, 2012 What's the connector ( or switch ) that the board is connected to for? It's wired to the power supply. The board probably needs a lot of juice. Quote Link to comment Share on other sites More sharing options...
candle Posted May 28, 2012 Author Share Posted May 28, 2012 currently it consumes 37mA, but with full blown configuration, it can get 3A @ 3.3V to pheripherials Quote Link to comment Share on other sites More sharing options...
+Larry Posted May 31, 2012 Share Posted May 31, 2012 Two-layer or four-layer board? -Larry Quote Link to comment Share on other sites More sharing options...
candle Posted May 31, 2012 Author Share Posted May 31, 2012 managed on two, but with 6/6mils track/gap Quote Link to comment Share on other sites More sharing options...
Dropcheck Posted June 19, 2012 Share Posted June 19, 2012 Hi Candle, How's it coming on this? Quote Link to comment Share on other sites More sharing options...
candle Posted June 19, 2012 Author Share Posted June 19, 2012 patience is virtue as they say first things first - need to dig out of ultimate shipments first 1 Quote Link to comment Share on other sites More sharing options...
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